Chair-seat



No. 607,894 Patented my 26, I898. w. F. SPANGLEB.

CHAIR SEAT.

(Apylication filed Jan. 18, 1898.)

(No Model.)

Prion.

WILLIAM F. SPANGLER, OF MOUNT UNION, PENNSYLVANIA.

CHAIR-S EAT.

SPECIFICATION forming part of Letters Patent No. 607,894, dated July 26, 1898. Application filed January 18, 1898. Serial No. 667,022. (No model.)

To all whom it may concern,-

Be it known that 1, WILLIAM F. SPANGLER,

a citizen of the United States, residing at lowing is a specification.

My invention relates to improvements in chair-seats having a body or filling inserted in a frame; and the objects of my improvement are, first, to secure greater rapidity and ease in manufacture by lessening the amount of time and labor required to insert the filling in the frame, and, second, to provide a simple method of fastening the filling in the frame. I attain these ends by the mechanism illustrated in the accompanying drawings, in

which- Figure 1 is a top or face view of the entire chair-seat. Fig. 2 is a vertical section thereof, showing the manner of inserting the fill- .ing in the frame and also showing the manner of inserting the pegs which form the fastening device. Fig. 3 is a vertical section of the grooved frame. Fig. 4 shows the peg which is used; and Fig. 5 is a vertical section of the tongued filling, showing more clearly the fastening device consisting of the pegs, groove, and tongue.

Similar letters refer to similar parts through out the different views.

The side pieces A A and the endpieces B B constitute the frame of the chair-seat. As shown in the drawings, Fig. 1, the side pieces A A overlap the end pieces B B,the side pieces A A being mortised and the end pieces B B tenoned but I do not desire to confine myself to this construction of frame. The sectional frame may consist of a different number of pieces or be fastened together in a difierent way. The essential part of the invention does not consist in the shape of the frame, but in the combination of tongued or grooved bottom,grooved or tongued frame,'and pegs which constitute the device for inserting and fastening the bottom or filling. The end pieces B B of the frame are grooved on the inside edge, as shown in Figs. 2 and 3. It is not essential to the invention that the grooves should be in the end pieces. They may be in the side pieces instead, and I do not limit myself to the construction shown in the drawings, wherein the grooves are shown as in the end pieces only. The grooves C, Fig. 3, however, either in the end pieces or the side pieces or in the bottom, are essential parts of the combination which constitutes my invention.

The bottom or filling D of the chair-seat consistsof a wooden piece of any desired form, having a tongue upon each of those two of its opposite edges which are contiguous to the two grooved end pieces or side pieces (as the case may be) of the frame. These tongues, as shown in Figs. 2 and 5, fit into the grooves C. This combination of tongued bottom or filling with grooves in the sides or ends of the frame constitutes the method by which the bottom or filling is inserted in the frame. It differs from the method of inserting the bottom in the frame by a groove running all round the frame in this, that in my invention the bottom is simply slid into the frame, and as there are but two edges upon which tongue and groove must be fitted instead of four the difficulty both of insertion and of fitting the bottom to the frame (a difficulty which in machine-made chairs having the groove all round the frame is a most serious one) is entirely avoided. Furthermore, in chair-seats having the groove all round the frame the groove and the bottom itself constitute the looking or fastening mechanism, which in my invention is constituted by the method'hereinafter described.

The fastening or locking device for securing the bottom in the frame consists of the pegs E E, running through the grooved end pieces (or side pieces, as the casemay be) B B and catching the tongue of the filling so put in at the edges of the said pieces B B that they are caught beyond the center by the said pieces B B at the top and so that the tongue of the filling catches beyond the center of the pins, forming a locked joint or a joint locked together with the pins or pegs. Ido not confine myself to any specific number of pegs, but the number and relative positions of the pegs may be varied.

The chair-seat thus described may be made of wood, paper, or other material, or some parts may be of different materials from the other parts.

What I claim, and desire to secure by Let ters Patent, is-

The combination in a chair-seat having a the bottom or filling and retaining the one in 10 removable sectional frame adapted to receive position against the other substantially as a bottom or filling, of a tightening or fastenshown and described. ing device consisting of a tongue upon oppo- Dated January 5, 1898. site edges of the bottom or filling, a groove upon opposite inside edges of the frame SPANGLER' adapted to receive said tongue, and pins or WVitnesses: pegs passing vertically through the grooved JNo. O. APPLEBY, edges of the frame and the tongued edges of H. E. HANAWALT. 

